CN101536112B - Wire conductor and process for producing the same - Google Patents
Wire conductor and process for producing the same Download PDFInfo
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- CN101536112B CN101536112B CN2007800407637A CN200780040763A CN101536112B CN 101536112 B CN101536112 B CN 101536112B CN 2007800407637 A CN2007800407637 A CN 2007800407637A CN 200780040763 A CN200780040763 A CN 200780040763A CN 101536112 B CN101536112 B CN 101536112B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/023—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/60—Continuous furnaces for strip or wire with induction heating
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
A wire conductor excellent in tensile strength, elongation at break, impact resistance, electrical conductivity, and fatigue properties; and a process for producing the conductor. The wire conductor is made of aluminum alloy filaments twisted together, the filaments containing 0.3-1.2 mass% silicon and containing magnesium in such an amount as to result in an Mg/Si of 0.8-1.8, with the remainder substantially being aluminum and incidental impurities. The wire conductor has a tensile strength of 240 MPa or higher, elongation at break of 10% or higher, absorbed impact energy of 8 J/m or higher, and electrical conductivity of 40% IACS or higher. The production process comprises twisting aluminum alloy filaments having that composition to form a twisted wire and then subjecting this twisted wire to solution heat treatment, quenching, and aging heat treatment. The temperatures for the solution heat treatment and aging heat treatment are preferably 500-580 DEG C and 150-220 DEG C, respectively. Heating for the solution heat treatment preferably is high-frequency heating.
Description
Technical field
The present invention relates to a kind of wire conductor and manufacture method thereof, more specifically, the present invention relates to a kind of conductor and manufacture method thereof that is applicable to automobile electric wire.
Background technology
In the power industry field of overhead power line is provided, because aluminium conductor has light weight and good conductivity, so using the aluminium conductor of making by alumina-base material traditionally.In automobile, OA equipment and field of household appliances, the copper conductor of being made by the copper-based material with good electric conductivity is used as holding wire and power line.
In automotive field, improved the performance and the function of automobile apace.Therefore, the number of the electric device of installing in automobile, control device and other device is increasing, and the number that is used for the copper conductor of automobile is in view of the above also increasing.
Recently, in automotive field, keep a close eye on for aluminium conductor especially, in aluminium conductor, its proportion approximately is that 1/3rd aluminium of copper is used as conductor, and its purpose is to reduce weight, and (as information, the density of aluminium is 2.70g/cm
3And the density of copper is 8.89g/cm
3).
Though being used as, fine aluminium (purity is 99% or higher) has 10mm
2The conductor of perhaps bigger area of section is the battery cables in automotive field for example, but the intensity of fine aluminium is low and fatigue durability is inferior, and is difficult in view of the above as having 1.5mm
2The normal conductor of perhaps littler area of section.
Therefore, made a try with intensity and the fatigue durability that improves this aluminium conductor.For example, make automobile electric wire (seeing the open No.2004-134212 of Japanese patent application laid-open) by the Al-Mg-Si alloy.
Contain 0.6wt% or lower Fe, 0.2 to 1.0wt% Si, 0.2 to 1.0wt% Mg and comprise aluminium and many aluminium alloy wires of the remainder of unavoidable impurities prepare this conductor by harness, and by in the process of producing conductor, utilizing heat treatment in the Al matrix, to separate out Mg
2Si improves the intensity of aluminium alloy with other element.
Summary of the invention
Problem to be solved by this invention
Yet, in the electric wire that is to disclose among the open No.2004-134212 of Japanese patent application laid-open, though aluminium alloy conductor is hardened and therefore intensity improve, low and fatigue durability in high strain regime of percentage elongation and impact resistance are inferior.Therefore, have following problem, promptly this conductor is difficult to as having for example 0.75mm
2The minor diameter conductor of perhaps littler area of section.
One object of the present invention is to overcome the problems referred to above and is to provide a kind of conductor with good tensile strength, elongation at break, impact resistance, conductivity and fatigue durability, and production method.
The means of dealing with problems
In order to realize this purpose and according to the intent of the present invention, a kind of conductor comprises many foundation line of being made by aluminium alloy, it is that 0.3 to 1.2% Si, content make the Mg of Mg/Si weight rate in 0.8 to 1.8 scope that described aluminium alloy contains mass content, and the remainder that mainly comprises Al and unavoidable impurities, wherein said conductor has 240MPa or higher tensile strength, 10% or higher elongation at break, 8J/m or higher impact absorption energy, and 40%IACS or higher conductance.
Described aluminium alloy also can contain from one or more elements of the group selection that comprises Fe, Cu, Cr and Mn, and the gross mass content of wherein said one or more elements is 0.5% or lower.
Aluminium alloy also can contain from comprising the Ti that is not more than 500ppm and being not more than a kind of or two kinds of elements of group selection of the B of 50ppm.
This conductor is applicable to that its conductor has 0.75mm
2The electric wire of perhaps littler area of section.
A kind of method of producing conductor according to the present invention comprises that many foundation line of being made by aluminium alloy by harness prepares the step of wire harness, described aluminium alloy contain mass content be 0.3 to 1.2% Si, content make the Mg/Si weight rate in 0.8 to 1.8 scope Mg and mainly comprise the remainder of Al and unavoidable impurities; And described wire harness carried out solution treatment, then described wire harness is quenched, and then described wire harness is carried out the aging heat treatment step.
Heating-up temperature when described wire harness is carried out solution treatment is preferably 500 to 580 ℃, and the heating-up temperature when described wire harness is carried out timeliness heat treatment is preferably 150 to 220 ℃.
Heating during solution treatment is high-frequency induction heating preferably.
Effect of the present invention
Constitute and have 240MPa or higher tensile strength, 10% or higher elongation at break, 8J/m or higher impact absorption energy because conductor according to the present invention has baseline that the Al-Mg-Si alloy of above prescribed limit makes by utilization, and 40%IACS or higher conductance, so it has good tensile strength, elongation at break, impact resistance, conductance, and fatigue durability, and can be used as small diameter wire.
If described aluminium alloy further contains one or more elements from the group selection that comprises Fe, Cu, Cr and Mn, the gross mass content of wherein said one or more elements is 0.5% or lower, and then conductor intensity is further improved.
If described aluminium alloy further contains from comprising the Ti that is not more than 500ppm and be not more than a kind of or two kinds of elements of group selection of the B of 50ppm that then conductor intensity and percentage elongation are further improved.Because these elements have the advantage of fine crystal structure, so imagination has obtained these advantages.
Because described conductor can have 0.75mm as its conductor
2The electric wire of perhaps littler area of section, thus the range of application of aluminium conductor can be enlarged, and can realize that at automotive field the weight of electric wire reduces.
In conductor production method according to the present invention, the solution treatment after preparing wire harness by harness aluminium alloy baseline has improved the impact absorption energy owing to recover percentage elongation.In addition, timeliness heat treatment subsequently provides owing to having improved and has separated out advantage that improves intensity and the advantage that improves conductance owing to the dissolved number of elements of reduction.In view of the above, conductor according to the present invention has good tensile strength, elongation at break, impact resistance, conductance, and fatigue durability.
If the heating-up temperature when wire harness is carried out solution treatment is 500 to 580 ℃ and the heating-up temperature when wire harness is carried out timeliness heat treatment is 150 to 220 ℃, then can suitably carry out solution treatment and timeliness heat treatment.
Solution treatment by high-frequency induction heating allows to carry out localized heating, and can be close to ground, thermal treatment zone arrangement quench zone in view of the above.Therefore, not only can be on the structure member with big thermal capacity and can tighten and carry out quenching after being connected on solution treatment having less thermal capacity structure member for example wiry, in described wire, be right after stop the heating after begin slow cooling.In addition, allow heating continuously and quench be applicable to for example wire of long structure member in accordance with the present production process.
Embodiment
To provide detailed description of the present invention now.
Prepare according to conductor of the present invention the remainder that described aluminium alloy contains Si, Mg and mainly comprises Al and unavoidable impurities by forming wire harness by many foundation line (elemental wire) that aluminium alloy is made.This conductor has 240MPa or higher tensile strength, 10% or higher elongation at break, 8J/m or higher impact absorption energy, and 40%IACS or higher conductance.
Provide for the explanation of the reason of regulation alloy compositions as mentioned above.In the following description, the content of each formation element is all expressed with unit mass %.
Si combines with Mg to separate out Mg imperceptibly in the Al matrix
2Si particle and other particle, and help to improve the intensity of aluminium alloy baseline.In order to obtain to improve the advantage of intensity, the content of Si is preferably 0.3 to 1.2%.If Si content is less than 0.3%, the advantage that then improves intensity is less, and is difficult to make this conductor to have 240MPa or higher tensile strength.On the other hand, if the content of Si greater than 1.2%, then is difficult to make this conductor to have 40%IACS or higher conductance.
Mg combines with Si to separate out Mg imperceptibly in the Al matrix
2Si particle and other particle, and help to improve the intensity of aluminium alloy baseline.In order to obtain to improve the advantage of intensity, the Mg/Si weight rate is preferably from 0.8 to 1.8 scope, more preferably from 1.0 to 1.4 scope.If the Mg/Si weight rate is less than 0.8, Mg then
2The quantity of Si compound is less, and the advantage that improves intensity is less, and is difficult to make this conductor to have 240MPa or higher tensile strength in view of the above.In addition, excessive Si is transformed into crystalline material, and because the influence of crystalline material, is difficult to make this conductor to have 10% or higher elongation at break and 8J/m or higher impact absorption energy.On the other hand, if the Mg/Si weight rate greater than 1.8, then the solution quantity of excessive Mg becomes big, and is difficult to make this conductor to have 40%IACS or higher conductance.
Except above-mentioned formation element, the aluminium alloy that constitutes according to conductor of the present invention can contain from one or more additive elements of the group selection that comprises Fe, Cu, Cr and Mn.These additive elements help to improve the intensity of aluminium alloy.In order to obtain to improve the advantage of intensity, the total content of additive element is preferably 0.5% or lower.In addition, the number of additive element is preferably two kinds or still less.Bigger additive element content can be easy to reduce elongation at break and impact absorption energy and be easy to increase conductor resistance.
Except above-mentioned formation element, can contain from a kind of or two kinds of additive elements of the group selection that comprises Ti and B according to conductor of the present invention.The percentage elongation that these additive elements have the advantage of finer crystalline texture and help to improve intensity and improve aluminium alloy.In order to obtain the advantage of finer crystalline texture, Ti preferably is not more than 500ppm, and B preferably is not more than 50ppm.The bigger content of these additive elements can be easy to increase conductor resistance.
Because conductor according to the present invention has good tensile strength, elongation at break, impact resistance, conductance, and fatigue durability, so it is applicable to small diameter wire.Conductor according to the present invention is applicable to that its conductor has preferred 0.75mm
2Perhaps littler and be more preferably 0.22 to 0.75mm
2The electric wire of area of section.Therefore, enlarged the range of application of aluminium conductor, and can realize in automotive field that preferably the weight of electric wire reduces.Be noted that this conductor can be compressed conductor.
Below, provide explanation according to the example of conductor production method of the present invention.A kind of conductor production method in accordance with a preferred embodiment of the present invention comprises that many foundation line of being made by the aluminium alloy with above-mentioned alloy compositions by harness prepares the step of wire harness, and described wire harness is carried out solution treatment, then described wire harness is quenched and then described wire harness carried out the aging heat treatment step.
When making the aluminium alloy baseline, the Al of the given content of fusion, Mg and Si are so that the motlten metal that acquisition has institute's phase concentration.Where necessary, Fe, Cu, Cr and Mn are added in this so that the motlten metal that acquisition has institute's phase concentration.
Below, utilize the continuous casting machine casting molten metal with preparation casting rod.Then, the hot-rolling mill that is connected in series by use will be cast rod and be made for wire rod.Can make wire rod by aforesaid continuous casting milling method or by ingot blank casting and extrusion method.In the situation of ingot blank casting and extrusion method, preferably after the ingot blank casting, carry out the processing that homogenizes.Advantageously, be right after Ti and the B that before casting, adds the formation refining agent.
Thereby then wire rod is carried out drawing and have the institute's phase diameter that is used for baseline.If wire rod is owing to the drawing limit ruptures, then suitable words are preferably carried out annealing.
In the harness process, Zhi Bei institute's issue purpose baseline is become wire harness by harness as mentioned above.Then, this wire harness experience heat treatment process.
In heat treatment process, preferably 500 to 580 ℃ of the heating-up temperatures during solution treatment.By carrying out solution treatment, the Mg in aluminium alloy
2The Si compound is dissolved.If the heating-up temperature during solution treatment is lower than 500 ℃, then Mg
2Thereby the Si compound is difficult to dissolve and produces thick compound particles, and can not easily obtain to improve the advantage of intensity.In addition, the work hardening that caused owing to cold working before the harness process is difficult to eliminate, and can not easily obtain to improve the advantage of percentage elongation.On the other hand, if the heating-up temperature during solution treatment is higher than 580 ℃, the then fusion once more mutually of the low melting point in aluminium alloy, and the change color that deforms easily and cause owing to Mg is oxidized.
In heat treatment step, preferably quench by using cooling water to carry out.By carry out quenching, at dissolved Mg in alloy during the solution treatment
2The Si compound is not separated out and is fixed in the alloy in dissolved state.If life period at interval between heating and quenching, then dissolved Mg
2The Si compound is easy to separate out producing thick compound particles, and can not easily obtain to improve the advantage of intensity.Therefore, preferably be right after execution quenching after heating.
Preferably the continuous annealing machine that has a quenching bath by use is carried out solution treatment and quenching in the following manner, that is, make wire harness be heated part and be heated to fixed temperature and be cooled by the quenching bath that is transferred by placing near heating part then.The example of continuous annealing machine comprises electric formula continuous annealing machine, tube furnace continuous annealing machine and high-frequency induction heating continuous annealing machine.Among them, high-frequency induction heating continuous annealing machine is particularly preferred.In the situation of using high-frequency induction heating continuous annealing machine, carry out solution treatment by high-frequency induction heating, and allow to carry out localized heating in view of the above.Therefore, can be close to ground, the thermal treatment zone and settle quench zone.
For example, in structure member, after stopping heating, can keep the condition of high temperature with big thermal capacity.On the contrary, for example in the wire, be right after after stopping heating slowly cooling beginning at structure member with less thermal capacity.Yet, even be right after after stopping to heat structure member that slowly cooling is easy to begin therein for example on the wire with less thermal capacity, be close to ground, the thermal treatment zone as mentioned above and settle quench zone also to allow to carry out to quench from the condition of high temperature.
In addition, ground, the next-door neighbour thermal treatment zone is settled quench zone to allow to carry out continuously heating and is quenched, and is applicable to for example wire of long structure member especially.Heating and quenching have improved conductor productivity ratio continuously.
In heat treatment step, timeliness heat treatment can be separated out in solution treatment and the Mg that has dissolved in alloy during quenching
2The Si compound.Therefore, can improve intensity and conductance.Preferably 150 to 220 ℃ of heating-up temperatures during timeliness heat treatment.Preferably 4 to 20 hours aging heat treatment duration.
If the heating-up temperature during timeliness heat treatment is lower than 150 ℃, the Mg that has then dissolved in alloy
2The Si compound is difficult to separate out, and can not easily obtain to improve the advantage of intensity.On the other hand, if the heating-up temperature during timeliness heat treatment is higher than 220 ℃, the Mg that then separates out
2The Si compound is easy to increase becomes thick particle, and can not easily obtain to improve the advantage of intensity.In addition, if the aging heat treatment duration be shorter than 4 hours, Mg then
2Separating out of Si compound is insufficient, and can not easily obtain to improve the advantage of intensity, and conductor resistance is easy to increase.On the other hand, if aging heat treatment lasted longer than 20 hours, the Mg that then separates out
2The Si compound easily increases becomes thick particle, and can not easily obtain to improve the advantage of intensity.
Preferably when being wrapped on the spool, carries out conductor timeliness heat treatment.Though can carry out timeliness heat treatment in the atmosphere usually, preferably in reducibility gas atmosphere or inert gas atmosphere, carry out timeliness heat treatment to avoid surface oxidation.
Because aforesaid production method can obtain the performance according to conductor of the present invention.Utilize the conductor of the acquisition like this of insulator coating to form insulated electric conductor.
Example
Provide detailed description of the present invention by reference example hereinafter.
(example 1 to 4)
Utilize the continuous casting machine casting to have the molten alloy of the alloy compositions shown in the table 1 with preparation casting rod.Then, utilize hot-rolling mill that each casting rod is made for the wire rod with 9.5mm diameter, and each wire rod that is obtained is carried out drawing has the 0.26mm diameter with preparation baseline.Then, harness seven foundation lines are to prepare each root wire harness.Subsequently, under the conditions shown in Table 1, wire harness is carried out solution treatment, quenching and timeliness heat treatment.As a result, obtained conductor according to example 1 to 4.
(comparative example 1 to 8)
Utilize alloy compositions shown in the table 1 and condition to obtain conductor in the mode identical according to comparative example 1 to 8 with example 1 to 4.
(comparative example 9 and 10)
Except after preparing each root wire harness, not carrying out solution treatment, quenching and the timeliness heat treatment, obtain conductor according to comparative example 9 and 10 in the mode identical with example 1 to 4 by the harness baseline.
(evaluation test)
Under given strain amplitude (Δ ε), each conductor is measured about tensile strength, elongation at break, impact absorption energy, conductance and fatigue durability.In addition, measure each surface of conductors pattern.Its result is shown in the table 1.The content of each the formation element in alloy compositions all is expressed as the unit mass % with respect to whole aluminium alloy.
(method of measurement and evaluation method)
Tensile strength
Utilize general tensile strength tester to measure tensile strength.240MPa or higher tensile strength be regarded as by.
Elongation at break
Utilize general tensile strength tester to measure elongation at break.10% or higher elongation at break be regarded as by.
The impact absorption energy
By end connection weight, and promote 1 meter and make that then weight freely falls, thereby measure the impact absorption energy to each conductor that between mark, has 1 meter distance.Carry out as giving a definition: when making the maximum weight of the weight that conductor can not rupture be W (N), impact absorption can be W (J/m).8J/m or higher impact absorption before fracture can be regarded as by.
Conductance
Utilize bridge method to measure conductance.40%IACS (International Annealed Copper Standard) or higher conductance be regarded as by.
Fatigue durability
Utilize the back-flexing testing fatigue device that does not apply tensile load to measure by utilizing insulator to cover the fatigue durability of the electric wire of each conductor preparation.10
-2Strain amplitude Δ ε under be 900 times or higher fatigue durability and 10
-4Strain amplitude Δ ε under 10 * 10
4Inferior or higher fatigue durability be regarded as by.
Surface topography
Visually check the existence of change color and distortion.Utilize " zero " signal not have change color and distortion, and utilize " * " signal to have change color and distortion.
[table 1]
Reference table 1, because constituting according to the aluminium alloy of the conductor of example 1 to 4 each, all to contain content be that 0.3 to 1.2% Si and content make the Mg of Mg/Si weight rate in 0.8 to 1.8 scope, each conductor all has 240MPa or higher tensile strength, 10% or higher elongation at break, 8J/m or higher impact absorption energy, and 40%IACS or higher conductance.In addition, each conductor all has under high strain amplitude 900 times or higher fatigue durability.In addition, on surface of conductors, do not detect change color and distortion.In view of the above, the conductor that is presented in the table in the example 1 to 4 has good tensile strength, elongation at break, impact resistance, conductance and fatigue durability.
In contrast, in conductor according to comparative example 1 to 4, because the Si content of each aluminium alloy and Mg content is all in the scope of above regulation, so tensile strength, elongation at break, impact absorption energy, conductance and be not all to satisfy the above scope of stipulating in the fatigue durability under the high strain amplitude.In view of the above, show in the table that the conductor according to comparative example 1 to 4 has inferior tensile strength, elongation at break, impact resistance, conductance and fatigue durability.
More specifically, when Si content (comparative example 1) less than 0.3% the time, tensile strength is less than 240MPa, and when Si content (comparative example 2) greater than 1.2% the time, conductance is less than 40%IACS.In addition, when Mg/Si weight rate (comparative example 3) less than 0.8 the time, tensile strength is less than 240MPa.When Mg/Si weight rate (comparative example 4) greater than 1.8 the time, elongation at break is less than 10%, and impact absorption can be less than 8J/m, and conductance is less than 40%IACS.
In conductor according to comparative example 5 to 8, because do not have to carry out the solution treatment of heating-up temperature and have 150 to 220 ℃ heating-up temperature and the timeliness heat treatment of duration of 4 to 20 hours, so tensile strength, elongation at break, impact absorption energy, conductance and be not all to satisfy the above scope of stipulating in the fatigue durability under the high strain amplitude with 500 to 580 ℃.In view of the above, the conductor that is presented in the table in the comparative example 5 to 8 has inferior tensile strength, elongation at break, impact resistance and fatigue durability.
More specifically, when the heating-up temperature during solution treatment is lower than 500 ℃ (comparative example 5), elongation at break is less than 10%, and impact absorption can be less than 8J/m.When the heating-up temperature during solution treatment is higher than 580 ℃ (comparative example 6), tensile strength is less than 240MPa, and elongation at break is less than 10%, and impact absorption can be less than 8J/m.Additionally, on surface of conductors, detect change color and distortion.When the heating-up temperature during timeliness heat treatment is lower than 150C and aging heat treatment duration when being shorter than 4 hours (comparative example 7), tensile strength is less than 240MPa.When the heating-up temperature during timeliness heat treatment is higher than 220 ℃ and aging heat treatment and lasts longer than 20 hours (comparative example 8), tensile strength is less than 240MPa.
In conductor,, after preparing wire harness, do not carry out solution treatment, quenching and timeliness heat treatment by the harness baseline as in the situation of traditional aluminium conductor according to comparative example 9 and 10.Therefore, the work hardening that caused owing to cold working before the harness step is difficult to be eliminated fully, and percentage elongation is lower.As a result, elongation at break is less than 10%, and impact absorption can be less than 8J/m.In view of the above, find to have inferior elongation at break and impact resistance according to the conductor of comparative example 9 and 10.
To the above stated specification of the preferred embodiment of the present invention be not be intended to have limit or limit the invention to disclosed precise forms, but can make amendment and change or can obtain modifications and variations from implementing the present invention according to above instruction.
For example, the conductor in above-mentioned example each all be arranged to the linear wire harness that becomes of seven foundation; Yet, the invention is not restricted to this.
Industrial usability
For example be applicable to the automobile electric wire according to conductor of the present invention.
Claims (8)
1. a conductor comprises many foundation line of being made by aluminium alloy, and described aluminium alloy contains:
Si, its content are 0.3 to 1.2 quality %;
Mg, its content make the Mg/Si weight rate in 0.8 to 1.8 scope; With
Remainder mainly comprises Al and unavoidable impurities,
Wherein, described conductor has 240MPa or higher tensile strength, 10% or higher elongation at break, 8J/m or higher impact absorption energy and 40%IACS or higher conductance.
2. according to the conductor of claim 1, wherein, described aluminium alloy also contains one or more elements of selecting from the group that comprises Fe, Cu, Cr and Mn, and the total content of wherein said one or more elements is 0.5 quality % or lower.
3. according to the conductor of claim 1 or 2, wherein, described aluminium alloy also contains a kind of or two kinds of elements of selecting the group of Ti below comprising 500ppm and the B below the 50ppm.
4. according to the conductor of claim 1 or 2, wherein, described conductor has 0.75mm
2Perhaps littler area of section.
5. according to the conductor of claim 3, wherein, described conductor has 0.75mm
2Perhaps littler area of section.
6. the manufacture method of a conductor said method comprising the steps of:
Prepare wire harness by many foundation line of being made by aluminium alloy is carried out harness, described aluminium alloy contains: content is that Si, the content of 0.3 to 1.2 quality % makes the Mg of Mg/Si weight rate in 0.8 to 1.8 scope and the remainder that mainly comprises Al and unavoidable impurities; With
Described wire harness is carried out solution treatment, then described wire harness is quenched, then described wire harness is carried out timeliness heat treatment.
7. according to the method for claim 6, wherein, the heating-up temperature when described wire harness is carried out solution treatment is 500 to 580 ℃, and the heating-up temperature when described wire harness is carried out timeliness heat treatment is 150 to 220 ℃.
8. according to the method for claim 6 or 7, wherein, the heating during described solution treatment is a high-frequency induction heating.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP294130/2006 | 2006-10-30 | ||
| JP2006294130A JP5128109B2 (en) | 2006-10-30 | 2006-10-30 | Electric wire conductor and manufacturing method thereof |
| PCT/JP2007/071142 WO2008053897A1 (en) | 2006-10-30 | 2007-10-30 | Wire conductor and process for producing the same |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102713584A Division CN102360589A (en) | 2006-10-30 | 2007-10-30 | Electric wire conductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101536112A CN101536112A (en) | 2009-09-16 |
| CN101536112B true CN101536112B (en) | 2011-10-19 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102713584A Pending CN102360589A (en) | 2006-10-30 | 2007-10-30 | Electric wire conductor |
| CN2007800407637A Active CN101536112B (en) | 2006-10-30 | 2007-10-30 | Wire conductor and process for producing the same |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102713584A Pending CN102360589A (en) | 2006-10-30 | 2007-10-30 | Electric wire conductor |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8278555B2 (en) |
| JP (1) | JP5128109B2 (en) |
| CN (2) | CN102360589A (en) |
| DE (1) | DE112007002585B4 (en) |
| WO (1) | WO2008053897A1 (en) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330041A (en) * | 2011-07-30 | 2012-01-25 | 湖南晟通科技集团有限公司 | Aging heat treatment method for aluminium alloy section |
| CN102330041B (en) * | 2011-07-30 | 2016-03-23 | 湖南晟通科技集团有限公司 | A kind of ageing hot processing method of aluminium alloy extrusions |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112007002585B4 (en) | 2018-05-09 |
| US8278555B2 (en) | 2012-10-02 |
| CN102360589A (en) | 2012-02-22 |
| WO2008053897A1 (en) | 2008-05-08 |
| CN101536112A (en) | 2009-09-16 |
| JP5128109B2 (en) | 2013-01-23 |
| JP2008112620A (en) | 2008-05-15 |
| DE112007002585T5 (en) | 2009-10-15 |
| US20100071933A1 (en) | 2010-03-25 |
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